"I've always like the Altekruse and its pic based variants...so when I stumbled across Brian's version, I was interested. Brian kindly gave permission for me to make a batch, so here they are. I'll let brian explan the rest to you (i.e. I'm stealing the description from his site).
Some years ago Brian noticed a drawing of puzzle concept in Stewart Coffin's book The Puzzling World of Polyhedral Dissections.

It would appear that there were a number of concepts created based on variations of the Alterkruse puzzle using pins and holes in each piece. Stewart also noted that by using many different design pieces, not just the standard left-hand and right-hand half/half combination of pieces, the puzzle would become even more interesting.

So, Mr Puzzle has done it. Brian actually invented one of these puzzles, making every piece different. A serious challenge.

There are 14 pieces to the puzzle, all different. The pieces have a total of 21 holes drilled in them in various formats and a matching 21 rods glued into the 14 pieces." -Eric Fuller